Abstract
The linear and nonlinear properties of Rayleigh-Taylor modes are examined in nonuniform multi-component dusty magnetoplasmas, taking into account the effects of warm ions and the parallel electron dynamics. For this purpose, we have derived a set of nonlinear equations by employing the hydrodynamic equations for the dusty plasma components. In the linear limit, it is found that the increment of the Rayleigh-Taylor instability is impeded due to the parallel electron inertial effects and the presence of static charged dust grains. The nonlinear mode coupling equations admit vortex streets and dipolar vortices as possible stationary solutions. The relevance of our investigation to space and laboratory plasmas is pointed out.
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